Thread: Bosch Super 4 HR78 R6 Plugs ok for 300E?
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Old 04-22-2008, 04:31 PM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
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Since Bosch has gone with Resistor plugs, most are switching to NGK with great results..
BP5EFS is a good NGK non-resistor choice for a high milage 103..

The 4's will work , but they are Resistor...........
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A Dalton
Last edited by Arthur Dalton; 04-22-2008 at 04:39 PM.
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